Even if Keeley cannot return due to her injured foot, the eviction should have still been carried through with Corin v Rachel.
This would mean 3 housemates have gone via not being evicted and allows 3 new housemates to enter without trouble getting the numbers down as the there is no overall rise in number of housemates (efficient amount of evictions left), instead we are making up 1 loss by not having an eviction but not improving the series in any way, shape of form.
With the eviction cancelled, there is still an opportunity for 2 newcomers, but evictions are a big event which are at least interesting and with 3 housemates lost in 1 week the show would desperately be shouting for newbies which might encourage the producers to get off their ass and find some - there were 60 or so left on the shortlist who would happily go in!!!
Anybody would think channel 4 want the show to fail...